bryanluby

NSTimeInterval start  = [[NSDate date] timeIntervalSince1970];
// Code to execute.
NSTimeInterval finish = [[NSDate date] timeIntervalSince1970];
NSLog(@"Execution took %f seconds.", finish - start);

bryanluby

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (indexPath.row % 2 == 0) {
        UIColor *altCellColor = [UIColor colorWithWhite:0.7 alpha:0.1];
        cell.backgroundColor = altCellColor;
    }
}

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// Pause app and enter into debugger
// Any ambiguous layouts will be labeled
po [[UIWindow keyWindow] _autolayoutTrace]

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void ConditionalSwitchUsingNumber(int number);
 
int main(int argc, const char * argv[])
{
    @autoreleasepool
    {
        ConditionalSwitchUsingNumber(0);
        ConditionalSwitchUsingNumber(1);
        ConditionalSwitchUsingNumber(2);
        ConditionalSwitchUsingNumber(6);

bryanluby

# Works best when an Xcode project is already open.

# Full Terminal command:
cd `osascript -e "tell application \"Xcode\" to get project directory of front project"`; pwd;

# Optional: Add this as an alias to .bash_profile. Then type "xt" in Terminal to invoke the command.
alias xt='cd `osascript -e "tell application \"Xcode\" to get project directory of front project"`; pwd;'

bryanluby

//
//  NSString+Reversed.h
//
//  Created by Bryan Luby on 5/16/13.
//

#import <Foundation/Foundation.h>

@interface NSString (Reversed)

bryanluby

//
//  NSURL+Tags.h
//
//  Created by Bryan Luby on 10/23/13.
//  Copyright (c) 2013 Bryan Luby. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSURL (Tags)

bryanluby

// http://stackoverflow.com/a/4242037/1306872

- (void)inspectResponderChainFromSender:(id)sender
{
    if ([sender isKindOfClass:[UIResponder class]]) {
        NSMutableArray *responderChain = [NSMutableArray array];
        [responderChain insertObject:sender atIndex:0];

        while ((sender = [sender nextResponder])) {
            if ([sender nextResponder]) {

bryanluby

// Make sure viewDidAppear has happened before sending this action to ensure that all links 
// in the responder chain are connected.
// http://stackoverflow.com/a/11768282/1306872
[[UIApplication sharedApplication] sendAction:@selector(resignFirstResponder)
                                           to:nil
                                         from:nil
                                     forEvent:nil];
                                     

bryanluby

- (void)handleKeyboardShow:(NSNotification *)notification
{
    NSDictionary *dict = notification.userInfo;
    NSValue *rectValue = dict[UIKeyboardFrameEndUserInfoKey];
    CGRect keyboardRect = [rectValue CGRectValue];
    
    UITextView *activeTextView;
    if ([self.textView1 isFirstResponder]) {
        activeTextView = self.textView1;
    } else if ([self.textView2 isFirstResponder]) {